Can env vars be referenced in shibboleth2.xml?

[Peter Schober]

* Cantor, Scott <cantor.2 at osu.edu> [2020-10-01 18:12]:
> I assumed it was generic because otherwise that's...dumb. Either
> Apache supports or it doesn't. I guess it doesn't.

This does sound a bit involved:
https://httpd.apache.org/docs/2.4/env.html#using

@Keith: Maybe share a few examples?

> sed and XML would be a very brittle combination, I would use XSLT.

xmlstarlet, in particular, is worth the slight lerning curve, IMO.

-peter